Submission #812257

#	Time	Username	Problem	Language	Result	Execution time	Memory
812257		vjudge1	Triple Jump (JOI19_jumps)	C++17	19 / 100	529 ms	241268 KiB

jumps

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const int N = 5e3 + 10;
int n;
ll a[N];
ll dp[N][N], mx[N][N];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++) 
        cin >> a[i];
    for(int i = 1; i <= n; i++) {
        for(int j = i; j <= n; j++) {
            mx[i][j] = max(mx[i][j - 1], a[j]);
        }
    }
    for(int len = 2; len <= n; len++) {
        for(int l = 1; l <= n - len + 1; l++) {
            int r = l + len - 1;
            dp[l][r] = max({dp[l][r - 1], dp[l + 1][r], a[l] + a[r] + mx[l + 1][(l + r) / 2]});
        }
    }
    int q;
    cin >> q;
    while(q--) {
        int l, r;
        cin >> l >> r;
        cout << dp[l][r] << '\n';
    }
}

• Subtask 1: 5 / 5
• Subtask 2: 14 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54